<template>
  <div class="login">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form">

      <div style="display: flex;flex-direction: column;align-items: center;justify-content: center">
        <div class="title" style="color: #303133;font-weight: bold">{{ sysInfo.sysName }}</div>
        <div class="" style="color: gray">{{ sysInfo.sysSlogan }}</div>
      </div>

      <el-form-item prop="username" style="margin-top: 8%">
        <el-input v-model="loginForm.username" type="text" auto-complete="off" placeholder="账号">
          <svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon"/>
        </el-input>
      </el-form-item>
      <el-form-item prop="password" style="margin-top: 8%">
        <el-input
          v-model="loginForm.password"
          type="password"
          auto-complete="off"
          placeholder="密码"
          @keyup.enter.native="handleLogin"
        >
          <svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon"/>
        </el-input>
      </el-form-item>
      <el-form-item prop="code">
        <div style="display: flex;flex-direction: row;align-items: center;justify-content: space-between;">
          <el-input class="code-input-item" type="text" prefix-icon="el-icon-s-cooperation"
                    style="color: black;font-size: 16px;width: 60%"
                    v-model="loginForm.code" placeholder="请输入验证码"
                    @keyup.enter.native="handleLogin()"></el-input>
          <img :src="codeUrl" @click="getCode" style="cursor: pointer;"
               alt="">
        </div>
      </el-form-item>


      <div style="display: flex;flex-direction: row;justify-content: space-between;">
        <span style="font-size: 15px;cursor: pointer;color: gray"
              @click="toRegister">没有账号?立即注册</span>
      </div>

      <el-form-item style="width:100%;margin-top: 8%">
        <div style="display: flex;flex-direction: row;align-items: center;justify-content: space-around">
          <el-button class="login-btn" type="primary" style="width:100%;" @click="reset"
                     icon="el-icon-delete">重置
          </el-button>

          <el-button
            :loading="loading"
            size="medium"
            type="primary"
            style="width:100%"
            @click.native.prevent="handleLogin"
          >
            <span v-if="!loading">登 录</span>
            <span v-else>登 录 中...</span>
          </el-button>
        </div>

      </el-form-item>
    </el-form>
    <!--  底部  -->
    <div class="el-login-footer">
      <span>Copyright © 2023-2030 EasyAdmin All Rights Reserved.</span>
    </div>
  </div>
</template>

<script>
import { getCodeImg, login, getConfigList } from '@/api/login'
import Cookies from 'js-cookie'
import { decrypt, encrypt } from '@/utils/jsencrypt'
import { getToken, removeToken, setToken } from '@/utils/auth'

export default {
  name: 'Login',
  data() {
    return {
      codeUrl: '',
      cookiePassword: '',
      loginForm: {
        username: 'admin',
        password: '123456',
        rememberMe: false,
        code: '',
        uuid: ''
      },
      sysInfo: {},
      loginRules: {
        username: [
          { required: true, trigger: 'blur', message: '用户名不能为空' }
        ],
        password: [
          { required: true, trigger: 'blur', message: '密码不能为空' }
        ],
        code: [{ required: true, trigger: 'change', message: '验证码不能为空' }]
      },
      loading: false,
      redirect: undefined
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  created() {
    this.getCode()
    this.getSysConfig()
    this.getCookie()
  },
  methods: {
    getSysConfig() {
      getConfigList().then(res => {
        if (res.code === 200) {
          this.sysInfo = res.data
        }
      })
    },
    reset() {
      this.loginForm = {}
    },
    toRegister() {
      this.$router.push('/register')
    },
    getCode() {
      getCodeImg().then(res => {
        this.codeUrl = 'data:image/gif;base64,' + res.data.img
        this.loginForm.uuid = res.data.uuid
      })
    },
    getCookie() {
      const username = Cookies.get('username')
      const password = Cookies.get('password')
      const rememberMe = Cookies.get('rememberMe')
      this.loginForm = {
        username: username === undefined ? this.loginForm.username : username,
        password: password === undefined ? this.loginForm.password : decrypt(password),
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
      }
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true
          if (this.loginForm.rememberMe) {
            Cookies.set('username', this.loginForm.username, { expires: 30 })
            Cookies.set('password', encrypt(this.loginForm.password), { expires: 30 })
            Cookies.set('rememberMe', this.loginForm.rememberMe, { expires: 30 })
          } else {
            Cookies.remove('username')
            Cookies.remove('password')
            Cookies.remove('rememberMe')
          }
          login(this.loginForm).then(res => {
            if (res.code === 200) {
              setToken(res.msg)
              this.$router.push({ path: this.redirect || '/' })
            }
          }).catch(() => {
            this.loading = false
            this.getCode()
          })
        }
      })
    }
  }
}
</script>

<style rel="stylesheet/scss" lang="scss">
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background-image: url("../assets/image/login222.png");
  background-size: 60%;
  background-repeat: no-repeat;
  background-position: left center;
}

.title {
  font-size: 25px;
  font-weight: bold;
  text-align: center;
  margin-bottom: 15px;
  color: #ffffff;
}

.login-form {
  border-radius: 6px;
  color: black;
  border: 1px solid #cfcfcf;
  margin-left: 60%;
  width: 25%;
  padding: 25px 25px 5px 25px;
  box-shadow: 0 0 25px #cac6c6;
  opacity: 0.8;

  .el-input {
    height: 38px;

    input {
      height: 38px;
    }
  }

  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 2px;
  }
}

.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}

.login-code {
  width: 33%;
  height: 38px;
  float: right;

  img {
    cursor: pointer;
    vertical-align: middle;
  }
}

.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: black;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}
</style>
